A demonstration on a fictional property. Nothing here is a real organization, and nothing on this page affects nDiligence or any site you use.
What to do. Read the port picture and the movement sequence, then apply the plan or hold it.
Scripted run. This walkthrough is playing itself. You are not driving it, and what it does next was decided in advance.
Port of Westmarch: one track was changed and forty-seven movements moved
A harbour operations centre does not watch two ships. It watches everything inside the port limits at once — 148 vessels here, under way, at anchor and alongside — and it runs a movement sequence over all of them. That is what makes the surface worth attacking, and it is why the whole port is on screen rather than a single encounter.
One contact is redrawn: position, heading and speed, on an inbound laden tanker. The three together make an unremarkable picture of a vessel standing off to the south waiting its turn, and they put it forty-two minutes late. Nothing else is touched, and the other 147 contacts carry exactly what the sensors reported.
Then the page's own movement sequencer does its job. It sees a deep-draught inbound holding an exclusive fairway transit, three tugs and a tidal window slip by forty-two minutes, and it re-plans the port around the gap: pilot boardings re-ordered, berth windows re-cut, departures released early, the tidal window given up. Forty-seven movements, all correctly derived, all derived from one false input. The planner is not attacked and does not fail, and a watchkeeper approves the result because every step of it follows from what is on the screen.
That ratio is the finding. A single altered value on a surface that feeds an automated planner does not stay a single altered value.